DE19716051A1 - Dislocation guard ring for use on hip endoprotheses and secures to plastic socket by screws - Google Patents

Dislocation guard ring for use on hip endoprotheses and secures to plastic socket by screws

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Publication number
DE19716051A1
DE19716051A1 DE19716051A DE19716051A DE19716051A1 DE 19716051 A1 DE19716051 A1 DE 19716051A1 DE 19716051 A DE19716051 A DE 19716051A DE 19716051 A DE19716051 A DE 19716051A DE 19716051 A1 DE19716051 A1 DE 19716051A1
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DE
Germany
Prior art keywords
luxation
locking ring
screws
hip
socket
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
DE19716051A
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German (de)
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KLUEBER DIETRICH DR MED
Original Assignee
KLUEBER DIETRICH DR MED
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Application filed by KLUEBER DIETRICH DR MED filed Critical KLUEBER DIETRICH DR MED
Priority to DE19716051A priority Critical patent/DE19716051A1/en
Publication of DE19716051A1 publication Critical patent/DE19716051A1/en
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/32—Joints for the hip
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30003—Material related properties of the prosthesis or of a coating on the prosthesis
    • A61F2002/3006—Properties of materials and coating materials
    • A61F2002/30062—(bio)absorbable, biodegradable, bioerodable, (bio)resorbable, resorptive
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30108—Shapes
    • A61F2002/3011—Cross-sections or two-dimensional shapes
    • A61F2002/30112—Rounded shapes, e.g. with rounded corners
    • A61F2002/30131—Rounded shapes, e.g. with rounded corners horseshoe- or crescent- or C-shaped or U-shaped
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30317—The prosthesis having different structural features at different locations within the same prosthesis
    • A61F2002/30324—The prosthesis having different structural features at different locations within the same prosthesis differing in thickness
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30433—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements using additional screws, bolts, dowels, rivets or washers e.g. connecting screws
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
    • A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
    • A61F2002/30772—Apertures or holes, e.g. of circular cross section
    • A61F2002/30784—Plurality of holes
    • A61F2002/30785—Plurality of holes parallel
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/32—Joints for the hip
    • A61F2002/3233—Joints for the hip having anti-luxation means for preventing complete dislocation of the femoral head from the acetabular cup
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/32—Joints for the hip
    • A61F2002/3241—Joints for the hip having a ring, e.g. for locking the femoral head into the acetabular cup
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/32—Joints for the hip
    • A61F2/34—Acetabular cups
    • A61F2002/3429—Acetabular cups with an integral peripheral collar or flange, e.g. oriented away from the shell centre line
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/32—Joints for the hip
    • A61F2/36—Femoral heads ; Femoral endoprostheses
    • A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
    • A61F2002/3611—Heads or epiphyseal parts of femur
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2210/00—Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2210/0004—Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof bioabsorbable
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2220/0041—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements using additional screws, bolts, dowels or rivets, e.g. connecting screws
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0002—Two-dimensional shapes, e.g. cross-sections
    • A61F2230/0004—Rounded shapes, e.g. with rounded corners
    • A61F2230/0013—Horseshoe-shaped, e.g. crescent-shaped, C-shaped, U-shaped
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2250/0014—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis
    • A61F2250/0036—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis differing in thickness

Abstract

Plastic socket components of hip endoprostheses are secured by a dislocation guard ring (A) which continues the respective socket curvature to surround the hip ball. The ring is fixed on the socket component (B) or inlay with screws (C) and is provided with bores to receive the screws. Preferably, the guard ring extends around a 210 deg section and is believed at the ends to avoid forming a step. Ring and screws are preferably manufactured from poly-lactic acid (PLLA), which is resorbed in about 6 weeks are converted to connective tissue.

Description

Die Erfindung betrifft einen Aufsatzring aus PLLA (Poly-L-Lactid Acid), welcher auf den Rand von aus Kunststoff gefertigten Pfannenkomponenten von Hüftendoprothesen mit ebenfalls aus PLLA gefertigten Schrauben aufgesetzt wird.The invention relates to an attachment ring made of PLLA (poly-L-lactide acid), which on the Edge of acetabular cup components made of plastic with screws made of PLLA are also attached.

Bei üblichen Pfannenkomponenten von Hüftendoprothesen, welche in den Beckenknochen (D) eingebaut werden, besteht die Gefahr, daß es zur Ausrenkung des Prothesenkopfes (E) aus der Pfanne (B) kommt. Der Luxationssicherungsring umfangt aber den Hüftkopf nachdem dieser in die Pfanne gesetzt wird durch die Fixierung mit den Schrauben und durch eine der Wölbung der jeweiligen Pfannenkomponente bzw. des Inlays folgende Rundung. Dadurch wird eine Ausrenkung verhindert. Der Prothesenkopf ist üblicherweise bei Hüftendoprothesen über den Prothesenschaft im Oberschenkelknochen (F) verankert. Andere aus einem Stück gefertigte Modelle von Pfannenkomponenten bzw. Inlays von Hüftpfannen haben zwar teilweise einen den Prothesenkopf umfangenden Rand (sogenannte Schnapppfannen), sind jedoch gerade dadurch wegen der ständigen Druckaufnahme bei Bewegungen deutlich lockerungsgefährdeter in ihrer Verankerung im Beckenknochen (D).With conventional acetabular components of hip endoprostheses, which in the Pelvic bones (D) are installed, there is a risk that it will dislodge the Prosthesis head (E) comes out of the pan (B). The luxation locking ring includes but the femoral head after it is placed in the socket by fixing it with the Screw and through one of the curvature of the respective pan component or  Inlays following rounding. This prevents dislocation. The prosthetic head is usually in the case of hip endoprostheses over the prosthesis socket in the Anchored femur (F). Other one-piece models from Cup components or inlays of acetabular cups sometimes have a den Prosthetic head-encompassing edge (so-called snap pans), however, are straight because of the constant pressure absorption during movements loosening in their anchoring in the pelvic bone (D).

Durch das resorbierbare Material PLLA entfällt einerseits die Gefahr eines Materialversagens (Lockern/Bruch der Schrauben oder Abscheren des Pfannenringes durch häufige Anschläge des Prothesenkopfes an den Rand). Andererseits werden Ring und Befestigungsschrauben nach ca. 6 Wochen in flexibles körpereigenes Bindegewebe umgewandelt, wodurch auch langfristig ein Schutz gegen Ausrenkungen, z. B. bei Unfällen oder Stürzen gegeben ist.On the one hand, the resorbable material PLLA eliminates the risk of Material failure (loosening / breakage of the screws or shearing off of the pan ring due to frequent stops of the prosthesis head on the edge). On the other hand, ring and fastening screws after approx. 6 weeks in flexible body's own connective tissue converted, which also provides long-term protection against dislocations, e.g. B. at Accidents or falls.

Fundstelle zu PLLA: Clinical Orthopaedics and Related Research, 298, pp 227-285, (1994) H. Pihlajamäki, O. Böstman, M. Manninen: Absorbable Plugs of Self-Reinforced Poly-L-Lactic-Acid in the Internal Fixation of Rabbit Distal Femoral OsteotomiesPLLA reference: Clinical Orthopedics and Related Research, 298, pp 227-285, (1994) H. Pihlajamäki, O. Böstman, M. Manninen: Absorbable Plugs of Self-Reinforced Poly-L-Lactic-Acid in the Internal Fixation of Rabbit Distal Femoral Osteotomies

Der Luxationssicherungsring (A) umfaßt einen 210-Grad Kreisausschnitt. Dadurch kann er je nach Wunsch und gefährdeter Ausrenkungsrichtung auf dem Rand einer Kunststoff- Pfannenkomponente (B) fixiert werden. Dazu trägt er vorgefertigte Bohrungen (G) zur Aufnahme von Kreuzschlitzschrauben (C) mit versenkbarem Schraubenkopf. Zu beiden Enden hin läuft der Ring sanft aus, damit keine Stufenbildung zum Rand der Kunststoffpfanne hin auftritt.The luxation locking ring (A) comprises a 210-degree circular section. This can depending on the desire and the risk of dislocation on the edge of a plastic Pan component (B) can be fixed. For this purpose, it contributes prefabricated holes (G) Inclusion of Phillips screws (C) with a retractable screw head. To both At the ends the ring runs out gently so that there is no step formation towards the edge of the Plastic pan occurs.

Der Luxationssicherungsring aus resorbierbarem PLLA stellt eine wesentliche Verbesserung der verfügbaren Pfannenkomponenten von Hüftendoprothesen dar, indem das Risiko für die typische Komplikation der Ausrenkung verringert wird. Die Resorbierbarkeit und Umwandlung in flexibles körpereigenes Bindegewebe führt auch zu einem langfristigen Schutz vor Ausrenkungen, ohne daß dabei Fremdmaterialien des Ringes im Körper verbleiben, die durch ihre Starrheit ansonsten durch ständige Beanspruchung versagen könnten.The luxation locking ring made of resorbable PLLA represents an essential one Improvement of the available cup components of hip endoprostheses by the risk of the typical complication of dislocation is reduced. The Absorbability and conversion into flexible body's connective tissue also leads to long-term protection against dislocations without foreign material from the Ringes remain in the body, due to their rigidity otherwise through constant Stress could fail.

Beschreibung der ZeichnungenDescription of the drawings

Fig. 1: Schnitt durch das künstliche Hüftgelenk mit Luxationssicherungsring in Körperquerachse Fig. 1: Section through the artificial hip joint with luxation locking ring in the transverse axis of the body

Fig. 2: Ausschnittsvergrößerung von Fig. 1 mit eingesetzter Schraube Fig. 2: Enlarged section of Fig. 1 with the screw inserted

Fig. 3: Pfannenkomponente mit aufgesetztem Luxationssicherungsring in Seitenansicht Fig. 3: Cup component with a luxation locking ring in a side view

Fig. 4: Pfannenkomponente mit aufgesetztem Luxationssicherungsring in Aufsicht Fig. 4: Pan component with a luxation locking ring in supervision

Es bedeuten:
A Luxationssicherungsring
B Pfannenkomponente
C Schrauben
D Beckenknochen
E Prothesenkopf
F Oberschenkelknochen
G Bohrungen im RingIt means:
A luxation snap ring
B pan component
C screws
D pelvic bones
E prosthesis head
F femur
G holes in the ring

Claims (4)

1. Luxationssicherungsring für aus Kunststoff gefertigte Pfannenkomponenten von Hüftendoprothesen bzw. von Inlays derselben, dadurch gekennzeichnet, daß der Luxationssicherungsring (A) die jeweilige Pfannenrundung- und -wölbung fortsetzt und so den künstlichen Hüftkopf umfängt. Der Luxationssicherungsring wird mit Schrauben (C) auf der aus Kunststoff gefertigten Pfannenkomponenten (B) bzw. dem Inlay fixiert und trägt dafür entsprechende Bohrungen (G).1. Luxation locking ring for socket components made of plastic of hip endoprostheses or of inlays thereof, characterized in that the luxation locking ring (A) continues the respective curvature and curvature of the socket and thus embraces the artificial femoral head. The luxation locking ring is fixed with screws (C) on the socket components made of plastic (B) or the inlay and has corresponding holes (G). 2. Luxationssicherungsring nach Patentanspruch 1, dadurch gekennzeichnet, daß der Luxationssicherungsring aus einem 210-Grad-Abschnitt besteht. Zu den Enden hin läuft der Ring schräg abfallend aus, so daß keine Stufenbildung zur Pfannenkomponente entsteht.2. luxation locking ring according to claim 1, characterized, that the luxation locking ring consists of a 210 degree section. To the At the end the ring runs out at an incline, so that there is no step formation Pan component is created. 3. Luxationssicherungsring nach Patentanspruch 1 oder 2, dadurch gekennzeichnet, daß Luxationssicherungsring und Befestigungsschrauben aus PLLA (Poly- L-Lactid Acid) gefertigt sind, welche nach ca. 6 Wochen resorbiert und in Bindegewebe umgewandelt werden.3. luxation locking ring according to claim 1 or 2, characterized, that the luxation locking ring and fastening screws made of PLLA (poly L-Lactid Acid) which are resorbed after approx. 6 weeks and in connective tissue being transformed. 4. Luxationssicherungsring nach einem der Patentansprüche 1 oder 2 oder 3, dadurch gekennzeichnet, daß der Luxationssicherungsring in Stärken von ½ cm und 1 cm existiert.4. luxation locking ring according to one of claims 1 or 2 or 3, characterized, that the luxation locking ring exists in thicknesses of ½ cm and 1 cm.
DE19716051A 1997-04-17 1997-04-17 Dislocation guard ring for use on hip endoprotheses and secures to plastic socket by screws Withdrawn DE19716051A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19716051A DE19716051A1 (en) 1997-04-17 1997-04-17 Dislocation guard ring for use on hip endoprotheses and secures to plastic socket by screws

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19716051A DE19716051A1 (en) 1997-04-17 1997-04-17 Dislocation guard ring for use on hip endoprotheses and secures to plastic socket by screws

Publications (1)

Publication Number Publication Date
DE19716051A1 true DE19716051A1 (en) 1997-11-13

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DE19716051A Withdrawn DE19716051A1 (en) 1997-04-17 1997-04-17 Dislocation guard ring for use on hip endoprotheses and secures to plastic socket by screws

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003086243A2 (en) * 2002-04-09 2003-10-23 Wasielewski Raymond C Biologically reabsorbable acetabular constraining components and materials for use with a hip replacement prosthesis and bioreabsorbable materials to augment hip replacement stability and function
WO2004037129A1 (en) * 2002-10-23 2004-05-06 Wasielewski Ray C Use of snap-on semi annular augments to inhibit multi-directional instability after total hip arthroplasty
WO2004037130A1 (en) * 2002-10-23 2004-05-06 Wasielewski Ray C Biologic modular tibial and femoral component augments for use with total knee arthroplasty
JP2005021699A (en) * 2003-07-03 2005-01-27 Centerpulse Orthopedics Inc Constrained acetabular liner
EP2740418A1 (en) 2012-12-04 2014-06-11 WALDEMAR LINK GmbH & Co. KG Surgical drill jig and surgical tool set
WO2020209770A1 (en) * 2019-04-08 2020-10-15 ÅKESSON, Stig Collar for preventing dislocation of hip joint prothesis

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6923833B2 (en) 2002-04-09 2005-08-02 Ray C. Wasielewski Biologically reabsorbable acetabular constraining components and materials for use with a hip replacement prosthesis and bioreabsorbable materials to augment hip replacement stability and function
WO2003086243A3 (en) * 2002-04-09 2004-01-22 Raymond C Wasielewski Biologically reabsorbable acetabular constraining components and materials for use with a hip replacement prosthesis and bioreabsorbable materials to augment hip replacement stability and function
US7615083B2 (en) 2002-04-09 2009-11-10 Orthowaz, Ltd. Biologically reabsorbable acetabular constraining components and materials for use with a hip replacement prosthesis and bioreabsorbable materials to augment hip replacement stability and function
WO2003086243A2 (en) * 2002-04-09 2003-10-23 Wasielewski Raymond C Biologically reabsorbable acetabular constraining components and materials for use with a hip replacement prosthesis and bioreabsorbable materials to augment hip replacement stability and function
US7309361B2 (en) 2002-10-23 2007-12-18 Wasielewski Ray C Biologic modular tibial and femoral component augments for use with total knee arthroplasty
WO2004037130A1 (en) * 2002-10-23 2004-05-06 Wasielewski Ray C Biologic modular tibial and femoral component augments for use with total knee arthroplasty
WO2004037129A1 (en) * 2002-10-23 2004-05-06 Wasielewski Ray C Use of snap-on semi annular augments to inhibit multi-directional instability after total hip arthroplasty
US7780736B2 (en) 2002-10-23 2010-08-24 Wasielewski Ray C Biologic modular tibial and femoral component augments for use with total knee arthroplasty
JP2005021699A (en) * 2003-07-03 2005-01-27 Centerpulse Orthopedics Inc Constrained acetabular liner
EP1506749A3 (en) * 2003-07-03 2010-03-31 Zimmer Inc. Constrained acetabular liner
EP2740418A1 (en) 2012-12-04 2014-06-11 WALDEMAR LINK GmbH & Co. KG Surgical drill jig and surgical tool set
WO2014086581A1 (en) 2012-12-04 2014-06-12 Waldemar Link Gmbh & Co. Kg Surgical drill guide and surgical tool set
DE202012013162U1 (en) 2012-12-04 2015-02-11 Waldemar Link Gmbh & Co. Kg Surgical drill guide and surgical tool kit
WO2020209770A1 (en) * 2019-04-08 2020-10-15 ÅKESSON, Stig Collar for preventing dislocation of hip joint prothesis

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